# coding=utf-8
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

m4_changequote(`<!', `!>')

import sys
import numpy as np
import os
from os import path
# Add dl module to the pythonpath.
sys.path.append(path.dirname(path.dirname(path.dirname(path.dirname(path.abspath(__file__))))))
sys.path.append(path.dirname(path.dirname(path.dirname(path.abspath(__file__)))))

import unittest
from mock import *
import plpy_mock as plpy


class GPUInfoTestCase(unittest.TestCase):
    def setUp(self):
        self.plpy_mock = Mock(spec='error')
        patches = {
            'plpy': plpy
        }

        self.plpy_mock_execute = MagicMock()
        plpy.execute = self.plpy_mock_execute

        self.module_patcher = patch.dict('sys.modules', patches)
        self.module_patcher.start()
        import madlib_keras_gpu_info
        self.module = madlib_keras_gpu_info
        self.module.output_tbl_valid = Mock()
        self.table_name = 'does_not_matter'

    def tearDown(self):
        self.module_patcher.stop()

    def test_gpu_configuration_invalid_source(self):
        with self.assertRaises(plpy.PLPYException):
            self.module.gpu_configuration('schema', self.table_name, 'invalid_source')

    def test_gpu_configuration_none_source(self):
        self.module.gpu_configuration('schema', self.table_name, None)
        self.assertIn('tensorflow', str(self.plpy_mock_execute.call_args_list))
        self.assertNotIn('nvidia', str(self.plpy_mock_execute.call_args_list))

    def test_gpu_configuration_tensorflow(self):
        self.module.gpu_configuration('schema', self.table_name, 'tensorflow')
        self.assertIn('tensorflow', str(self.plpy_mock_execute.call_args_list))
        self.assertNotIn('nvidia', str(self.plpy_mock_execute.call_args_list))

    def test_gpu_configuration_nvidia(self):
        self.module.gpu_configuration('schema', self.table_name, 'nvidia')
        self.assertIn('nvidia', str(self.plpy_mock_execute.call_args_list))
        self.assertNotIn('tensorflow', str(self.plpy_mock_execute.call_args_list))

    def test_gpu_configuration_tensorflow_uppercase(self):
        self.module.gpu_configuration('schema', self.table_name, 'TENSORFLOW')
        self.assertIn('tensorflow', str(self.plpy_mock_execute.call_args_list))
        self.assertNotIn('nvidia', str(self.plpy_mock_execute.call_args_list))

    def test_gpu_configuration_nvidia_mixedcase(self):
        self.module.gpu_configuration('schema', self.table_name, 'NVidIa')
        self.assertIn('nvidia', str(self.plpy_mock_execute.call_args_list))
        self.assertNotIn('tensorflow', str(self.plpy_mock_execute.call_args_list))


if __name__ == '__main__':
    unittest.main()
# ---------------------------------------------------------------------